Average Weather in July in Beale Air Force Base California, United States

In Beale Air Force Base, the month of July is characterized by essentially constant daily high temperatures, with daily highs around 94°F throughout the month, rarely exceeding 103°F or dropping below 84°F.
The highest daily average high temperature is 95°F on July 20.

Daily low temperatures are around 63°F, rarely falling below 57°F or exceeding 71°F. The highest daily average low temperature is 64°F on July 18.

For reference, on July 19, the hottest day of the year, temperatures in Beale Air Force Base typically range from 64°F to 95°F, while on December 31, the coldest day of the year, they range from 39°F to 54°F.

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Clouds

The month of July in Beale Air Force Base experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 14% to 10%. The lowest chance of overcast or mostly cloudy conditions is 10% on July 21.

The clearest day of the month is July 21, with clear, mostly clear, or partly cloudy conditions 90% of the time.

For reference, on February 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Beale Air Force Base, the chance of a wet day over the course of July is essentially constant, remaining around 1% throughout.

For reference, the year's highest daily chance of a wet day is 33% on February 28, and its lowest chance is 0% on July 28.

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

Over the course of July in Beale Air Force Base, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 40 minutes, implying an average daily decrease of 1 minute, 19 seconds, and weekly decrease of 9 minutes, 15 seconds.

The shortest day of the month is July 31, with 14 hours, 12 minutes of daylight and the longest day is July 1, with 14 hours, 52 minutes of daylight.

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Beale Air Force Base is 5:43 AM on July 1 and the latest sunrise is 22 minutes later at 6:05 AM on July 31.

The latest sunset is 8:35 PM on July 1 and the earliest sunset is 18 minutes earlier at 8:17 PM on July 31.

Daylight saving time is observed in Beale Air Force Base during 2017, but it neither starts nor ends during July, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:39 AM and sets 14 hours, 55 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:21 AM and sets 9 hours, 25 minutes later, at 4:46 PM.

The solar day over the course of July. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Beale Air Force Base is essentially constant during July, remaining around 0% throughout.

The highest chance of a muggy day during July is 1% on July 9.

For reference, on July 8, the muggiest day of the year, there are muggy conditions 1% of the time, while on October 15, the least muggy day of the year, there are muggy conditions 0% of the time.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Beale Air Force Base is essentially constant during July, remaining within 0.1 miles per hour of 3.3 miles per hour throughout.

For reference, on December 18, the windiest day of the year, the daily average wind speed is 3.5 miles per hour, while on October 3, the calmest day of the year, the daily average wind speed is 2.9 miles per hour.

The highest daily average wind speed during July is 3.4 miles per hour on July 26.

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Beale Air Force Base is essentially constant during July, remaining within 0.2 kWh of 8.2 kWh throughout.

The highest average daily incident shortwave solar energy during July is 8.4 kWh on July 1.

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Beale Air Force Base are 39.109 deg latitude, -121.354 deg longitude, and 203 ft elevation.

The topography within 2 miles of Beale Air Force Base contains only modest variations in elevation, with a maximum elevation change of 358 feet and an average elevation above sea level of 214 feet. Within 10 miles contains only modest variations in elevation (1,978 feet). Within 50 miles contains large variations in elevation (8,310 feet).

The area within 2 miles of Beale Air Force Base is covered by grassland (94%), within 10 miles by grassland (66%) and cropland (24%), and within 50 miles by cropland (32%) and trees (28%).

Data Sources

This report illustrates the typical weather in Beale Air Force Base year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Beale Air Force Base.

The estimated value at Beale Air Force Base is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Beale Air Force Base and a given station.

Other Data

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.